Emerson Series 3000 manual Input signals, Output signals, Non-intrinsicallysafe input signals

Input signals

Non-intrinsically safe input signals
One 2-wire	Frequency range	0–20,000 Hz
frequency/pulse input	Minimum pulse width	25 μ-sec
	Power	Sourcing or sinking
	Voltage	0–0.8 VDC low state
		3–30 VDC high state
	Current	Nominal 5 mA pull-up
Two discrete	Pulse width	0.15 sec minimum
momentary inputs	Voltage	0–0.8 VDC low state
		3–30 VDC high state
		Dry contacts

Intrinsically safe input signals

One 4-wire Coriolis sensor signal input with ground

Output signals

Non-intrinsically safe output signals

Two active

4–20 mA outputs

Three discrete outputs

One 2-wire frequency/pulse output

Isolated to ±50 VDC from all other outputs and earth ground

Maximum load limit of 1000 Ohms

Output is linear with process from 3.8 to 20.5 mA per NAMUR NE43 (June 1994)

Configurable for the application
Polarity	Active high or active low, software selectable
Power	Internal pull-up to 24 V
Voltage	24 VDC nominal
Current	Sourcing at 5.6 mA when Vout = 3 VDC
	Sinking up to 500 mA at 30 VDC maximum

Scalable to 10,000 Hz

Output is linear with flow rate to 12,500 Hz

Pulse width	50% duty cycle above the crossover frequency(1)
	Configurable between 0.543 ms and 277 ms
Polarity	Active high or active low, software selectable
Power	Active or passive, software selectable
Voltage	24	VDC nominal, active
	30	VDC applied maximum, passive
Current	Sourcing at 10 mA at 3 VDC, active
	Sinking at 500 mA, active or passive

(1)The crossover frequency depends on the configured value of the pulse width. At the minimum pulse width value of 0.543 ms, the crossover frequency is 922 Hz. At the maximum pulse width value of 277 ms, the crossover frequency is 1.8 Hz.

6Micro Motion® Series 3000 Transmitters and Discrete Controllers